Metal complexes

Abstract

Complexes of nickel or cobalt with phosphine, phosphite, stilbene or arsine ligands, especially nickel-phosphine complexes, useful as catalysts.

What is claimed is: 
     
       1. As a novel complex compound, Ni(P(C 6  H 5 ) 3 ) 4  comprising tetrakis(triphenylphosphine)nickel in the form of red-brown crystals. 
     
     
       2. As a novel complex compound, C 8  H 12  Ni(P(C 6  H 5 ) 3 ) 2  in the form of red-brown crystals, predominantly comprising cyclooctadiene-nickel bis(triphenylphosphine). 
     
     
       3. As a novel complex compound, C 14  H 12  Ni(P(C 6  H 5 ) 3 ) 2  comprising stilbene nickel bis(triphenylphosphine) in the form of dark-red crystals. 
     
     
       4. As a novel complex compound, Ni(P(NC 5  H 10 ) 3 ) 2  comprising nickel bis(tripiperidinephosphine) in the form of yellow crystals. 
     
     
       5. As a novel complex compound, Co(P(C 6  H 5 ) 3 ) 4  comprising tetrakis(triphenylphosphine) cobalt in the form of dark green crystals. 
     
     
       6. As a novel complex compound, Ni(Sb(C 6  H 5 ) 3 ) 4  comprising tetrakis stilbene nickel in the form of yellow-green crystals. 
     
     
       7. As a novel complex compound, Ni(As(C 6  H 5 ) 3 ) 4  comprising tetrakis arsine nickel in the form of yellow-brown crystals. 
     
     
       8. As a novel complex compound, Co(C 5  H 7  O 2 )(P(C 6  H 5 ) 3 ) 2  comprising cobalt(acetylacetonate)bis(triphenylphosphine) in the form of a turquoise-colored powder. 
     
     
       9. As a novel complex compound (CoD)Ni[P(OC 6  H 5 ) 3  ] 2  comprising cyclooctadiene nickel bis(triphenylphosphite). 
     
     
       10. As a novel complex compound [(C 6  H 5  -o-C 6  H 4  O) 3  P] 2  NiCoD comprising, cyclooctadiene nickel bis[tri(ortho oxydiphenyl)phosphite]. 
     
     
       11. As a novel complex compound, C 8  H 12  NiP(C 6  H 5 ) 3  comprising octadienediyl nickel (triphenylphosphine).